Symptom
Additional Symptom
•
CDR103 -- Not High Sierra Format
Occurs Regardless of the Discs Used
Possible Causes and Solutions
Hardware Conflict
If the SCSI interface board uses DMA channels, try changing the selected DMA
channel. Valid settings are normally Channel 1 or Channel 3. See the instruction
manual for your SCSI interface board.
Memory Manager Conflict
If the SCSI interface board uses memory-mapped addressing, exclude the addresses
from the memory manager. See the instruction manual for your SCSI interface board.
Incorrect Version of Microsoft CD-ROM Extensions
Version 2.00 or higher of MSCDEX is required to read a High Sierra or ISO 9660 format
disc.
Symptom
Additional Symptom
•
Excessive Noise
CDR101 Error Message
•
Disc Heard Jumping
Possible Causes and Solutions
Defective Caddy
Replace caddy.
Defective CD-ROM Disc
A fingerprint or other contaminants or deep scratches on the disc’s surface may prevent
the drive from reading data. See Chapter 11 to learn how to clean CD-ROM discs.
If the problem persists, try setting the AUTO switch OFF. This setting reduces the data
transfer rate to 150KB/sec, making it possible to read some marginal data. Normally
the transfer rate is 600KB/sec for the data region of the disc and 150KB/sec for the
audio region. Always turn the drive OFF before changing the setting of the switches.
CHAPTER 13 ---- Troubleshooting
60
PX-43CH/PX-45CH OPERATION MANUAL
